Inhaler



Feb. 19, 1929. 1,702,806 9 A. H. BOSWORTH INHALER Filed April 21, 1925 H, I I 1 M11509 WWW I I cally than hasheretofore been possible. 'A

T E S Patented Feb. 19, 1929.

UNITED STA PATENTI oFFicE;

ABTHUBH. BOSWORTH, or'wIcHI rA, KANSAS INHAVILER.

Application filed April 21, 1925. Serial No. 24,800.

This invention relates to inhalers for the I time increasing the Afurther object is to provide'an inhaler of'extremely simple,

light, convenient and efficient. c011 compact, v structlon, which can be, made more economifurther object is to provide a means of quickly and accurately controlling the quantity of medicament placed ineach inhaler, at the same time so distributing the medicament as to expose the maximum surface for absorp- I tion by the passing air current. A stillfurther obj ectis to direct the flow a manner as to compel a ma-ximumtime of contact with the greatest-possible surface of medicament, thus assuring efficient saturation. p I

The preferred embodiment of my invention is shown in the drawings. Fig. 1 isa perspective view of the receptacle, Fig., 2is end view of same, Figure 3 a longitudinal cross section of the inhaler, Fig. 4 is an end view with portion cut away to show position of washer and filler, Figure 5 is a longi tudinalview of'the filler, and Fig. 6 an end view showing washer with filler outlined.

. The receptacle may be of any desired shape or size, but is preferably formed of a hollow cylindrical tube, (1), one end of which is closed, the open end and formed to suitably engage the nostril. This closing and forming may be accom plished in various ways, with or without cutting a portion of the tubing 7 erably accomplished by cuttinga plurality of prongs, (3), so shaped that when bent over a partial closure is effected, leaving means of outlet (6) for the air, either through the central aperture or through a. plurality of slots, or both. An opening or plurality of openings (2) is provided'for'inlet of air, these openings being preferably placed adjacent to the open. end'of the tube, so that one cap may effectively close all openings, and give com-v plete protection from evaporation and ingress of dirt. 1

It is customary in des gning inhalers to V distribute the medicament in some manner to enlarge the extent of surface exposed to the air. This is sometimes accomplishedby to reduce the num-' liquefy on Warming; second, by increasin of air in such being partially closed form, but it away, but is prefj before discharge.

diluting with parafiin or similar substances,

which is open to the objection that free evaporation is retarded as soon as the surface medicament has evaporated more often this cotton or excelsior; in my invention 1 have made use ofan absorbent material of delinite form,'such as paper, which I call-a filler (7), means of which several valuable and distinct purposes are accomplished, among them the following: First, this filler is equally adapted to receive liquid medicaments, such as oils, or substances such as menthol which or reducing the extent or thickness of the ller a predetermined quantity of the medicament is absorbed; third, evaporation takes place from the surface only, and this surface may be more or less extended by altering the shape of the filler, to suit special requirements; fourth, in caseof mixed medicaments of different boiling points, fresh medicament to replace surface evaporation is drawn from the interior substance of the filler by capillarity,

rather than by evaporation. of the more vola-' tile constituents, the composition 0f the inhalation thus remaining practically constant at alltimes; fifth, by means of the definite form of the filler this serves not only the aforementioned purposes, but 1 provides as well a division of the tube into chambers, (4 and 5), and means for properly dividing anddirecting the air currents.

I have shown the filler (7 in triangular is evident that variations of this form may be used. This filler is introduced into the tube in such a manner that the upper end is above the inlet opening or openings, and free air space is left between the bottom of the filler andthe closed end of the tu e. chambers formed by the junction of the edges of thefiller with the walls of the tube is then sealed by appropriate means, such asby turning down flaps integral with the filler, or by inserting a washer (8) in such a manner that the entering air is forced to first descend toward the bottom of the chamber or chambers (4) adjacent to inlet, then 'upward to point of outlet, thus'bringing the air in contact with all surfaces of the filler After the filler has thus been introduced and the chambers sealed as described, the prongs (3) are bent over as shown inFig.- 1 in order to hold the material Theupper end of the chamber or I no r Within the container, and to provide a proper fit for the nostril. The cap is not an essential part of the inhaler, but is preferably placed over the end when not in use, to prevent evaporation andingress of dirt, and the in the form, arrangement, and construction 7 beingpossible and still be Within the spirit of the invention.

What I claim is: An lnhalencomprising a casing, consisting of a single piece constituting a tubular body portion closed at one end and having inbent integral prongs at the other end, the edges of whic'h are in spaced relation, in combina tion with an absorbent filler Within the body portion, the filler consi-stingof a flat strip of medicated absorbent carrying material bent angular-1y longitudinally ofthe 'strip With the edges ofthe angular filler frictionally engagingthe inner wall portionlof the casing to divide the space in thecasing into a central passageway and a pluralityof passage-Ways surrounding the first named-passageway.

' ARTHUR BO'SWORT-H. 

